Which of the Lianggong valves are used for wastewater and sewage treatment? With the continuous aggravation of water pollution in China, the sewage treatment and recycling industry has been attached great importance. In the sewage treatment pipeline system, valves play a very important role. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and more and more people are entering the daily life.

現(xiàn)代污水處理技術(shù)按處理程度可分為一級(jí)處理、二級(jí)處理和三級(jí)處理。一般來(lái)說(shuō)，污水處理的程度是根據(jù)水質(zhì)和被處理水的去向來(lái)確定的。在良工閥門(mén)中每個(gè)級(jí)別使用的閥門(mén)也不同。主要去除污水中的懸浮固體污染物，大部分物理處理方法只能完成初級(jí)處理的要求。污水經(jīng)一級(jí)處理后，BOD一般可去除30%左右，達(dá)不到排放標(biāo)準(zhǔn)。一級(jí)處理屬于二級(jí)處理的預(yù)處理。所用閥門(mén)及其管道附件：刀閘閥、三偏心蝶閥、過(guò)濾器等

Modern sewage treatment technology can be divided into primary treatment, secondary treatment and tertiary treatment according to the treatment degree. Generally speaking, the degree of sewage treatment is determined according to the water quality and the destination of the treated water. The valves used in each level of Lianggong valves are also different. It mainly removes suspended solid pollutants in sewage, and most physical treatment methods can only meet the requirements of primary treatment. After primary treatment, BOD can generally be removed by about 30%, which can not meet the discharge standard. The primary treatment belongs to the pretreatment of the secondary treatment. Valves and pipe accessories used: knife gate valve, three eccentric butterfly valve, filter, etc

主要去除污水中的膠體和溶解性有機(jī)污染物（BOD、COD物質(zhì)），去除率可達(dá)90%以上，使有機(jī)污染物達(dá)到排放標(biāo)準(zhǔn)，懸浮物去除率可達(dá)95%，出水效果好。在良工閥門(mén)中所用閥門(mén)有軟密封蝶閥、閘閥、球閥、止回閥等進(jìn)一步處理難降解有機(jī)物、氮磷等可導(dǎo)致水體富營(yíng)養(yǎng)化的可溶性無(wú)機(jī)物。主要方法有生物反硝化除磷、混凝沉淀、砂濾、活性炭吸附、離子交換和電滲析。使用的閥門(mén)有對(duì)夾蝶閥、閘閥、球閥、止回閥、橡膠軟接頭等。

It mainly removes colloid and dissolved organic pollutants (BOD and COD substances) in the sewage, with a removal rate of more than 90%, so that the organic pollutants can meet the discharge standard, and the removal rate of suspended solids can reach 95%. The effluent effect is good. The valves used in Lianggong valve include soft sealing butterfly valve, gate valve, ball valve, check valve, etc. to further treat the refractory organic matter, nitrogen and phosphorus and other soluble inorganic matter that can lead to eutrophication of water body. The main methods are biological denitrification phosphorus removal, coagulation sedimentation, sand filtration, activated carbon adsorption, ion exchange and electrodialysis. The valves used include wafer butterfly valve, gate valve, ball valve, check valve, rubber soft joint, etc.

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