Courtesy of Jiangsu Jiuwu Hi-tech Co
Standard discharge, reclaimed water reuse and zero effluent discharge
1. As for paper mill wastewater treatment, pulping wastewater is the most difficult wastewater to be treated in the papermaking industry. The organic pollutants and inorganic salts are high in content, complex in composition, high in hardness, high in costs. The technical staff of JIUWU work with experts from the Institute of Membrane Science and Technology of Nanjing Tech University and develop successfully membrane technology as the core of zero effluent discharge process or zld (zero liquid discharge).
2. Using the process of pretreatment, membrane integration, evaporation crystallization and other related processes turns waste into valuable and achieves the sewage recycle. The project forms a major technological breakthrough in the field of wastewater treatment of pulp and paper.
Industrial water prices continue to rise
Industrial water intake limit
Increased emission water quality standards (COD, TOC, etc)
Enforcement requirements for environmental protection and water reuse rate, etc.
Large demand for fresh water
Large amount of wastewater discharge
The composition of wastewater is complex, and the content of organic pollutants and inorganic salts is high.
Core advantage of process package
Independent research and development, Global First
Turn waste into treasure and realize 100% full reuse of wastewater
Multiple 10,000-ton demonstration projects
Reuse water, salt, and dry mud
The water quality of the produced water is good and meets the requirements for productive reuse.
zld (zero liquid discharge)
Jiangsu Jiuwu Hitech Co., Ltd has done the largest zero liquid discharge project in paper pulp industry. The project is located in Japanese Oji Paper Co., Ltd. (OJI PAPER) in China, the scale of 40000m3/day of papermaking, pulp wastewater. Main processes include ozone-coupled biofilter (removing COD), the integrated membrane system of uf technology and reverse osmosis, electrodialysis (EDR) concentration system, MVR evaporation crystallization system. Through above-mentioned advanced processing system, the realization of wastewater recycling and zero liquid discharge. The clean water is supplied to the power plant desalination system and the production water system, waste salt is supplied to the Transportation Bureau to do snowmelt agent and chemical raw materials. The project which is the world's largest zero liquid discharge project in paper pulp industry has been stably operating for more than 3 years.
JIANGSU JIUWU HI-TECH CO. LTD.,founded in 1997, focus on producing ceramic membrane purification for many years. And JIUWU HI-TECH has become a leading company in the membrane separation industry. We sincerely invite and welcome people from all around the world to invest and create more values together.
Paper Industry Wastewater
Standard discharge, reclaimed water reuse and zero effluent discharge 1. Pulping Wastewater is the most difficult wastewater to be treated in the papermaking industry. The organic pollutants and inorganic salts are high in content, complex in composition, high in hardness, high in costs. The technical staff of JIUWU work with experts from the Institute of Membrane Science and Technology of Nanjing Tech University and develop successfully membrane technology as the core of zero effluent discharge process. 2. Using...
Water Purification Challenges: ZLD, EDI, COP systems
Applied Water Solutions was contacted by a client who planned to move their manufacturing facility to an area where there is strict limitations on water discharge. Working close with the client we created a process flow diagram (PFD) using multiple water purification technologies that provided pure water generation, water recycling capabilities and offsite disposal of solids. From the PFD we then created a Process Instrument Diagram (P&ID) that defined the project in more detail. The project was executed with...
The Missing Piece: Utilizing evaporation technology to dewater RO reject wastewater
Reverse Osmosis reject often has high salinity making it prohibitive for discharge to the local sewer facility and expensive to have hauled away. The white paper discusses the advantages of evaporation in general, as well as the differences between Thermal Evaporators and Mechanical Vapor Compression (MVC) Evaporators. Also discussed are the technical details of RO reject water chemistry as well as estimated volume reduction percentages. A cost effective Zero Liquid Discharge (ZLD) solution that features...
Evaluation and Testing of Technologies for Brine Minimization at Eastern Municipal Water District
ABSTRACT Eastern Municipal Water District (Eastern) in Southern California is facing increasing brine disposal challenges at its two inland desalter facilities. In most cases at inland sites, the disposal of brine involves either the dilution of the waste stream in another receiving body or the concentration of brine solutions (Truesdall et al., 1995). In the case of Eastern, brine streams from these facilities is discharged to the Santa Ana Regional Interceptor (SARI) line, which carries brine flow to coastal...
Distillation Process Can Yield Zero Liquid Discharge System
Many industrial applications produce liquid waste as a by-product of their process. As environmental regulations governing the disposal of industrial wastewater become more stringent, it`s imperative that innovative wastewater treatment solutions are used to treat this waste and minimize the environmental impact of disposal. While numerous technologies exist to treat industrial wastewater, Zero Liquid Discharge (ZLD), a relatively new `system` approach, is gaining momentum in industrial markets. As its name...
Innovative Approaches to RO Concentrate Management: Beneficial Reuse and Concentrate Minimization
ABSTRACTDesalination of brackish waters and reclaimed waters using reverse osmosis (RO) is often limited by the options available for concentrate disposal, particularly in inland areas. Dewatering the concentrate is alternative approach to disposal but the available thermal and membrane technologies are still cost prohibitive for most applications. Beneficial reuse of the RO concentrate represents a sustainable alternative to more traditional concentrate disposal and treatment options because the concentrate...
Recovery of Precious Metal Catalysts - A New Process Using Supercritical Water Oxidation
Up to now, the recovery of precious metals used as catalysts in chemical processes has involved the use of incineration. Now, however, a British-Swedish joint venture has developed a process which uses supercritical water oxidation instead, which provides many economic and environmental advantages. Precious metals are used extensively in catalysts in a wide range of industrial chemical processes. Sometimes they are used in a homogeneous form, but more often fixed to a solid support for ease of handling. In many...
Picking Their Membranes - Part I -
Membrane use by water suppliers may not be new, but suppliers are considering membranes in new ways -- by number and variety of applications. Membranes can work on a wider range of resource waters, more efficiently and for less cost than before. Among membranes` attractions as substitutes for conventional water-treatment technologies, such as filtration, distillation and ion-exchange are: energy savings; operating ease; and system design flexibility. Also, membranes enable water providers to remove...
Invasion of the non-indigenous nuisance mussel, Limnoperna fortunei, into water supply facilities ...
The aquatic nuisance mussel, Limnoperna fortunei, arrived in Japan before 1987 possibly with the Asian clam imported as food from mainland China. Now the mussel’s distribution has spread to two river systems in central Japan. Water authorities reported several cases of damage caused by L. fortunei. Most cases of damage were caused by dead mussels clogging small diameter pipes for raw water sampling and monitoring and for cooling water. Clogging of cooling water pipes stopped raw water pumping to a water...
Water Industry on the Eco Wave?
A wave of privatization is rolling through the water industry – at the environment‘s expense? In order to provide an answer to this question, the Environmental-Rating agency oekom research AG, Munich, put a number of water supply companies and manufacturers of water appliances to the environmental test. In results published today, oekom identifies the British water supplier Severn Trent as the environmental leader of the water supply group with a B grade in the overall Environmental-Rating. The Austrian water...
Evaluation of Ecological Risks Associated with the use of Chlorine Dioxide for the Bleaching of ...
1.1 Scope and Objectives A small number of viable options are presently available for the bleaching of wood pulp (delignification and brightening) during the manufacture of pulp and paper. The use of chlorine dioxide (ClO2) in the bleaching process has largely superceded the earlier use of Cl2, or elemental chlorine, in the majority of North American pulp mills: It was discovered over a decade ago that the previous widespread use of Cl2 contributed to the production and subsequent release to the environment of...
Treatment of Sugar Carbonatation Sludge for Reuse and Flue Gas Desulphurisation
In this work sugar refinery carbonatation sludge is treated in a pilot scale facility for two purposes: reuse in the carbonatation process, mixed with fresh calcium hydroxide, and flue gas desulphurisation. The sludge is first dried, and then calcinated in a batch kiln with a capacity of 100 kg, designed for the purpose. This process is potentially attractive for the sugar industry, since it can save both process water and calcium oxide, simultaneously reducing the amount of wastewater. This paper presents the...
State-wide collection of site remediation data in support of environmental quality objectives
Geographic Information Systems (GIS) hold great potential as a tool for managing environmental site remediation data. While noting the location of contaminated sites in GIS is commonplace, GIS has played only a minor role in review and analysis of chemical data gathered during an investigation or monitoring activity. The New Jersey Department of Environmental Protection Site Remediation Branch (NJDEP SRP) has undertaken a project making the use of GIS for this purpose a reality within their organization. Through...
KPDES Permit Compliance: Metals in Wastewater Effluent at Fort Knox
ABSTRACT Prior to constructing a new FOTW, Fort Knox had a history of exceeding KPDES effluent limitations for ammonia and BOD. The new 6 MGD FOTW solved the problem, but metals exceedances became an issue. The exceedances could be linked to several factors: low water-quality based effluent limitations (WQBELs) on the new KPDES permit, high background concentrations of some metals, and high metals in some waste streams. Fort Knox adjusted its operating practices and negotiated with the agency to achieve...
Choosing an Oil Skimmer for the Machine Shop
Advantages of Using an Oil Skimmer: The use of an oil skimmer in the machine shop setting holds many benefits. Removing the oil from a machine coolant tank will initiate some esthetic benefits such as cutting down on the amount of smoke generated from the cutting tool coming into contact with oil laden coolant. When a machine is shut down for the weekend, oil has a chance to come to the surface of the coolant tank. Bacteria that are living in the coolant tank use up the dissolved oxygen in the coolant mix,...
Recycling of Municipal Wastes in Agriculture. II. Irrigation of Corn with Treated Municipal ...
Abstract Restriction of available water observed in the last years in arid or semiarid areas forces the planners to consider any source of water for irrigation. The purpose of this paper was to investigate the suitability of wastewater produced by the treatment plant of the city of Larissa, Central Greece for irrigation of corn. With a three year`s field experiment it was shown that wastewater significantly increased corn yield and may substitute considerable quantities of mineral fertilizers. Increase in corn...
Compilation of EU Dioxin Exposure and Health Data
Introduction There is considerable public, scientific and regulatory concern over the possible adverse health effects of chronic exposure to trace levels of persistent organic pollutants. The class of compounds made up of the polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF), often collectively known as dioxins, has received widespread attention and attracted a great deal of research, following the accidental release of the most toxic of these (2,3,7,8 TCDD) at Seveso in 1976. Diox...
Environmental Situation in Africa
Abstract Africa The economic and social needs of Africa depends more on its environmental resources but these natural resources are seriously declining and that is really effecting the entire region. Sustainable development in this rapidly changing region has become an imperative, and must take place in the complex context of a diverse and changing ecosystem, political transition and evolution toward market economies. The region is heading towards integrating environmental components into sectors like...
Reverse Osmosis and Ultrafiltration Systems
Closing the Waste Loops: Australian Newsprint Mills
The manufacture of newsprint is a process which generates both solid and liquid wastes. Australian Newsprint Mills Ltd Albury has given increasing attention to waste issues in recent years and has succeeded in closing or partially closing some of the ëwaste loopsí, especially in the areas of waste paper recycling, waste water, and solid waste. Background Australian Newsprint Millsí (ANM) integrated pulp and paper mill at Albury, New South Wales, was established in 1981. The facility currently manufactures...
Wood Preserving Industry - Pollution Prevention Guidelines
Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum emissions levels that are normally achievable through a combination of cleaner production and end-of-pipe treatment. The guidelines are designed to...
Explore the capabilities of nanofiltration and ultrafiltration. Filters have similar looks, ...
Introduction Even if you’re an expert in reverse osmosis (RO) membrane technology, you may be overlooking some applications using often neglected cousins of RO: nanofiltration (NF) and ultrafiltration (UF). Although virtually identical in looks to RO membranes, NF and UF membranes serve distinctly different separation functions. Dramatic levels of resource recovery, efficiency improvement and pollution prevention are compelling incentives for the industry to continue to use NF and UF. Membrane separation...
Water Quality Models
` In order to determine the impacts of a particular discharge on ambient water quality, it is usually necessary to model the diffusion and dispersion of the discharge in the relevant water body. The approach applies both to new discharges and to upgrading of existing sources. This note provides guidance on models that may be applicable in the context of typical Bank projects.` Introduction Mathematical models can be used to predict changes in ambient water quality due to changes in discharges of wastewater. In...
Properties and Behavior of Nonhalogenated VOC`s
An important consideration when evaluating a remedy is whether the compound is nonhalogenated or halogenated. A nonhalogenated compound is one which does not have a halogen (e.g., fluorine, chlorine, bromine, or iodine) attached to it. The vendor of the technology being evaluated must be informed whether the compounds to be treated are nonhalogenated or halogenated. In most instances, the vendor needs to know the specific compounds involved so that modifications to technology designs can be made, where appropriate...
Common Treatment Train for Halogenated VOCs
In general, no single technology can remediate an entire site. Several treatment technologies are usually combined at a single site to form what is known as a treatment train. A system diagram of a common treatment train for halogenated VOCs is illustrated below. A ground water pumping system is used to pull contaminated water from the subsurface. The VOC contaminated water is pumped to a liquid phase granulated activated carbon (GAC) adsorption system. The GAC system removes VOCs in the water and the effluent is...
Optimizing Wastewater Treatment
` Growing volumes of both industrial and municipal wastewater are being discharged to surface waters but the treatment provided frequently is inadequate to protect the desired uses of the receiving waters. With limited resources in terms of both institutional capacity and finance, governments face difficult choices in optimizing their investments in municipal systems and establishing practical requirements for industrial wastewater treatment. This note presents an approach to making coherent decisions on levels...
Application of Membrane Technology for the Recovery and Reuse of Water
Abstract As water and sewer costs are expected to increase over the next decade, membrane technology will continue to be a viable and economical option in the recovery and reuse of water. This paper describes the mechanism of membrane effected separation (specifically reverse osmosis, ultrafiltration and microfiltration), membranes commercially available, membrane element configurations, and how complete membrane systems are designed. The paper also discusses case histories of a variety of proven applications,...
Membranes, the Finest Filtration
Introduction The notion that salt could be removed from seawater without a phase change took hold of Dr. Sourirajan`s imagination in the late 1950`s. The actual invention of the reverse osmosis (RO) membrane took place in his laboratory at UCLA around 1960. (Thus Sourirajan could be called not only the `Father of Reverse Osmosis,` but the initiator of all crossflow membrane technology.) The full commercialization of RO and its sister crossflow technology, ultrafiltration (UF), occurred in the early 1970`s. About...
Treating Industrial Water with Membrane Technology
A variety of industries are finding that it makes sense to reevaluate the way they treat industrial process water, both to improve the quality of their products and increase the efficiency of their processes. Purification systems utilizing crossflow membrane filtration, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF) can be a good alternative to traditional filtration and chemical treatment systems. RO crossflow filtration systems produce water similar in quality to demineralized or...
Two Case Histories of Industrial Water Reuse Via Membrane Technology
Abstract This paper describes two successful applications of ultrafiltration (UF) and reverse osmosis (RO) membrane technology used to reclaim water, reduce waste water discharge costs. The first case history covers oily waste water treatment at a major aluminum beverage can manufacturing plant. The second case describes treatment of waste water from a multi-plating bath section of a major wheelchair manufacturing facility. The mechanisms of separation effected by both UF and RO are described at the molecular...
Understanding Crossflow Filtration
There`s a lot of attention being given to water availability and purity, with good reason. Obtaining enough water is a struggle in some areas. In others, water is tainted with contaminants. It is therefore predictable that regulations and economics will force careful water treatment and stress water re-use. Fortunately, there are water treatment methods that can help you meet the water quality challenges, and related water supply challenges, you face. Among these is crossflow filtration, a technology that has...