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Removal of phosphorus and fluorine from acid wastewater by calcium carbonate

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Removal of phosphorus and fluorine from acid wastewater by calcium carbonate
Identification and characterisation of phenolic compounds ...
Identification and characterisation of phenolic compounds ...

Vanillic ,acid, (m/z167) and caffeic ,acid, (m/z 179) were found with an important content in the extracts from mountainous areas (4.25 and 8.52 % of total phenols). p -coumaric ,acid, (m/z 163) was detected only in the extracts from plain areas, and its amount was significantly higher (9.98% of total phenols).

Characteristic of wet method of phosphorus recovery from ...
Characteristic of wet method of phosphorus recovery from ...

Characteristic, of wet method of phosphorus recovery from polish sewage sludge ash with nitric ,acid,. ... depending on ,factors, such as phosphate industry trends to improve recovery rates and the mining of lower grade phosphate ... (either biological or chemical) used in ,wastewater, treatment plants. The type of the precipitating agent is also ...

WASTEWATER CHARACTERISTICS FROM TOFU PROCESSING …
WASTEWATER CHARACTERISTICS FROM TOFU PROCESSING …

wastewater, from Tahu Sumedang. Table 1. ,Characteristic, of ,wastewater, from Tahu Lampaseh Aceh Parameter Unit Results MLSS mg/L 1,177 BOD mg/L 3,575.5 NH 3-N mg/L 36.1 PO 4-P mg/L 1.81 COD mg/L 6,500 Turbidity NTU 387 pH - 4.9 (28.6 oC) Table 2. ,Characteristic, of ,wastewater, from Tahu Solo Parameter Unit Results MLSS mg/L 1,150

Wastewater Laboratory Procedures And Chemistry
Wastewater Laboratory Procedures And Chemistry

If the ,wastewater, is exposed to the atmosphere, H2S will be released and a typical rotten egg odor will be detected. Anaerobic bacteria found in ,wastewater, can liberate H2S from the solids. When the gas leaves the ,wastewater, stream and comes in contact with moisture and oxygen, sulfuric ,acid, is formed which is very corrosive to concrete.

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