Purification・・・Industrial effluents 　　WK is colorless and transparent liquid, and of high quality and low cost. It has outstanding functions of improvement of water quality and complete decomposition of sludge. Its merits are as follows: 　　1. Accomplishment of real water purification: ① no adverse effects of discharge from WK-based treatment facilities ② decrease in N-T and N-P 　　2. Great reduction of costs: ① no need of coagulant ② reduction of electricity ③ no need of (excess) sludge treatment cost or no need of filter and disposal cost of filter cake 　　3. Improvement of water quality and complete decomposition of sludge can be achieved in existing treatment facilities. There are no adverse effects on existing treatment facilities. No filtration unit and no incineration unit of filter cake are needed. 　1） Effluent Treatment facility of Brewery, China Examination of waste water (in an existing facility) left photo: Nov. 5, 2004 before WK addition, yellowish waste water, low degree of transparency and COD 150mg/L right photo: Dec. 3, 2004 4 weeks passed after WK addition, increase in the degree of transparency of water and decrease in COD 45mg/L Time course of trickling tank before WK addition Nov. 5, 2004 2 weeks after WK addition　Nov. 19, 2004 Situation: Decomposition of sedimentary sludge and its floatation 15 weeks after WK addition Situation: Blue algae are grown, an eco-system is recovered and overflow　water seems clean. Note: In the course of this process, the amount of sewage to be treated was increased to 2.4-fold. 　　　　Nevertheless, COD value was maintained at a value below 60. 　＊In China, the standard imposed to industrial effluent is specified to be less than 100 mg/L. A penalty is imposed to the violation of the standard, depending on the degree of violation; reduction of production, suspension of production and closing of factory. 　＊At the contract with a factory, the COD value has been decided and observed. 　＊In China, the standard is not so strict as that in Japan, so the amount of WK added can be reduced. 　2） Waste water from a dyeing and finishing factory located in Guangdong Time course of purification of reaction tank (in constructed facility) Before WK addition Nov. 15, 2004 Situation: Bad odor and COD 92 in waste water 8 weeks after WK addition　Jan. 15, 2005 Situation: sludge decomposition in progress, odorless and COD 35 12 weeks after WK addition　Jan. 31, 2005 Situation: Complete decomposition of sludge and odorlessand odoless 　3)　 Waterkeeper Technology has been supported by numerous companies in Japan as well. The discharge from treatment facility located in every company is satisfied with the standard prevailed in Japan. No adverse effects on existing treatment facilities are confirmed. (Unfortunately, any information on the purification results can not be opened to the public because of users' wishes.) 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　ｔo ｔop ｜home｜technology｜rivers｜sewage｜effluents｜energy saving｜ Minaki Advance Inc. (Postal Code 731-5124) 12-301, 1-ban, 4-chome, Minaga, Saeki-ku, Hiroshima-city, Japan Note: Any transfer of all contents in the present home page is forbidden.　　　　　　 Copyright(c) 2001-2005 Minaki Advance Inc. All Rights Reserved