sludge dewatering chemical Articles

  • Event Announcement-2018 Vietwater in SECC of HCMC

    Maoyuan Environmental Protection Technology, Co., Ltd., is a company specialized in Screw Press Sludge Dewatering Machine, Belt filter press, Polymer dosing machine and other sludge handling equipment. Well-known clients include Sinopec, BASF Chemical, China-petrol, Sino-Franch Water, etc. We will be at Vietwater Exhibition from 7th to 9th November, at SECC in Ho Chi Minh City. And we sincerely ...

  • Lead Plating

    A Midwest company is plating lead and etching the material with an HCl batch. The resultant wastewater had a lead concentration of 2,000-4,000 ppm. Traditional chemistry (pH adjustment to 9.8, coagulation/flocculation) could only decrease the concentration to 5.0 ppm. The facility was had to retreat the wastewater and only then could reach a lead level of 3.0 ppm.  With the use of the ...


    By Integrated Engineers Inc.

  • Kemicond - Improvement of the Dewaterability of Sewage Sludge by Chemical Treatment

    The Kemicond process for sludge conditioning consists of a chemical treatment with sulphuric acid and hydrogen peroxide at a pH-value around 4 followed by a dewatering unit. It is shown that through the chemical treatment of ferruginous digested sludge the dewaterability, measured in laboratory experiments as CST-value, can be improved. From the results of the experiments, it is concluded that ...

  • Nippoh Chemicals CO.,LTD - Case Study

    Let it does job for you! VOLUTE frees operator from maintenance. Operators had to make frequent check-up and maintenance with the existing belt filter press before introducing the VOLTUE Dewatering Press. Sludge condition changed time to time that dilute sludge often spilled over from the side of filter cloth, making operators to clean up machine every three hours. ...


    By AMCON Inc.

  • Let it do the job for you! VOLUTE frees operators from maintenance (Japan)

    Nippoh Chemicals Co., Ltd. Problem Operators had to make frequent check-ups and maintenance with the existing belt filter press before introducing the VOLUTE Dewatering Press. Sludge conditions changed time to time so that diluted sludge often spilled over from the side of the filter cloth, making operators have to clean up the machine every three hours. ...


    By AMCON Inc.

  • Nitrogen removal in tertiary wastewater treatment plant of a chemical complex

    A Biochemical Contact Oxidation Film (BCOF) technique was piloted for the treatment of a secondary effluent of the Jilin Chemical Industry Corporation (JCIC). The original pulse contact flocculation clarifier used for the tertiary treatment was not performing to the discharge standards. Results show that NH3-N concentration was decreased from 30 mg/L to 15 mg/L, COD concentration was decreased ...


    By Inderscience Publishers

  • Dewatering Paper Mill Lagoon Sludge - Ancram, NY - Case Study

    Sludge from the secondary treatment system lagoon at the New York mill of Schweitzer-Mauduit International, Inc. had to be removed. Geotube technology with SmartFeed Chemical Conditioning System supporting technology was the most cost-effective and  efficient method  of containing  and dewatering the sludge. The dredging contractor removed 3,285 cubic yards of sludge from the ...

  • Energy recovery from thermal treatment of dewatered sludge in wastewater treatment plants

    Sewage sludge is a by-product generated from municipal wastewater treatment (WWT) processes. This study examines the conversion of sludge via energy recovery from gasification/combustion for thermal treatment of dewatered sludge. The present analysis is based on a chemical equilibrium model of thermal conversion of previously dewatered sludge with moisture content of 60–80%. Prior to ...


    By IWA Publishing

  • Improved dewatering of CEPT sludge by biogenic flocculant from Acidithiobacillus ferrooxidans

    Bioleaching using an iron-oxidizing bacterium, Acidithiobacillus ferrooxidans, and its biogenic flocculants was evaluated to improve the dewaterability of chemically enhanced primary treatment (CEPT) sewage sludge. CEPT sludge in flasks was inoculated with A. ferrooxidans culture, medium-free cells and the cell-free culture filtrate with and without the energy substance ...


    By IWA Publishing

  • Three years of operation of North America's first nutrient recovery facility

    The first full-scale nutrient recovery installation in North America became operational in May 2009 at the Clean Water Service's Durham Advanced Wastewater Treatment Plant in Tigard, Oregon. Recovering ammonia and phosphorus from the dewatering side stream as struvite has a positive impact on plant operations. Significantly reducing the phosphorus recycle lowers the phosphorus loading on ...


    By IWA Publishing

  • Customized Screw Press Sludge Dewatering Machine for Clients

    Different models from small to big. Motors are optional: Chinese Brand or Nord. Materials are optional: SS304 or SS316.  Our Sludge Dewatering Machine Advantages: **  High resistance to oily sludge: Clog-free structure, volute can easily handle oily sludge without clogging. **  Energy & water-saving design, low noise, and little vibration **  24-hour automated ...

  • Confectionary and retort-packed food plant case study

    Cost reduction by using a proper polymer! This nationally-known factory, famous for confectionery and retort-packed food, dewaters its waste activated sludge with VOLUTE EC-202 model. They had used powder polymer manufactured by another manufacturer. However our staff realized the flock is in poor condition when he visited their factory. When you use a wrong polymer, polymer adding ...


    By AMCON Inc.

  • A new oxic-settling-anaerobic (NOSA®) activated sludge process for minimizing excess sludge in secondary biological treatment plants: a pilot-scale evaluation of the absorption–biodegradation process

    This study compared the sludge reduction performance of a new oxic-settling-anaerobic (NOSA) process with that of a conventional adsorption–biodegradation process. A 50 m3/d pilot trial system with two different process configurations was operated for 6 months. The NOSA process functioned effectively in removing both chemical oxygen demand and nitrogen with the efficiencies of 86 and ...


    By IWA Publishing

  • Sewage Plant - Hei Ling Chau Island, Hong Kong - Case Study

    Sewage plant with SYSDAF as clarifier and sludge thickener - Flow 200m3/hour Upgrade of a sewage plant at a Hong Kong government facility on Hei Ling Chau Island in Hong Kong. Two SYSDAFs were used for clarification and sludge thickening of the biological mixed liquor, instead of the old clarifier. ...


    By Syskill - WWTS P/L

  • Correlation of wood-based components and dewatering properties of waste activated sludge from pulp and paper industry

    Large amounts of wet sludge are produced annually in municipal and industrial wastewater treatment. Already in pulp and paper industry, more than ten million tons of primary sludge, waste activated sludge, and de-inking sludge is generated. Waste activated sludge contains large quantities of bound water, which is difficult to dewater. Low water content would be a matter of high calorific value in ...


    By IWA Publishing

  • Effect of digester F/M ratio on gas production and sludge minimization of ultrasonically treated sludge

    Sludge pretreatment by mechanical, chemical or thermal methods before anaerobic digestion has been applied to increase the digestability of excess sludge. Pretreatment processes rely on their ability to disrupt cell membranes and to release organic materials from the cells into the aqueous phase. Pretreatment by mechanical disintegration has grown rapidly in recent years in parallel with the ...


    By IWA Publishing

  • Odour reduction strategies for biosolids produced from a Western Australian wastewater treatment plant: results from Phase I laboratory trials

    This study investigated sources of odours from biosolids produced from a Western Australian wastewater treatment plant and examined possible strategies for odour reduction, specifically chemical additions and reduction of centrifuge speed on a laboratory scale. To identify the odorous compounds and assess the effectiveness of the odour reduction measures trialled in this study, headspace ...


    By IWA Publishing

  • Paint

    Problem: A paint manufacturer, that produces both oil and water based paints, needed help to solve their liquid sludge problem. At that time the wastewater was batch treated and consisted of a chemical addition process followed by settling. This was to be changed in the near future to a continuous type treatment system. The settled sludge consistency varied form 5% to 10%. The ...


    By HydroCal Inc.

  • Glass Recycling Factory - Case Study

    Adjusting the specification according to the dewatering target. This factory recycles glass and processes them into small pieces which can be used for making glass bottles. Nevertheless, the pieces of glass need to be washed before having been shipped to another factory where the final product will be made and this cleaning water needs to be treated somehow. They had been using a belt ...


    By AMCON Inc.

  • Effect of filter media thickness on the performance of sand drying beds used for faecal sludge management

    The effect of sand filter media thickness on the performance of faecal sludge (FS) drying beds was determined in terms of: dewatering time, contaminant load removal efficiency, solids generation rate, nutrient content and helminth eggs viability in the dried sludge. A mixture of ventilated improved pit latrine sludge and septage in the ratio 1:2 was dewatered using three pilot-scale sludge ...


    By IWA Publishing

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