In order to effectively solve the Beijing city sewage treatment plant effluent with high content of practical problems, through the treatment process in biological (A2O) method is adding chemical enhanced phosphorus removal unit, in order to carry out the laboratory test and field production test. Laboratory tests using aerobic tank effluent for testing water, polyaluminium chloride of different concentration gradient the (PAC), polyferric sulfate (PFS), ferric chloride (Fe Cl3), the phosphorus removal effect were studied, and the phosphorus removal mechanism is discussed. The results showed that: 3 kinds of chemicals, the best PAC removal, when the dosage of 60mg/L, adding coefficient 4.15, the effluent total phosphorus content of less than 0.5mg/L, and the dosage of low cost, only 0.078 yuan /t. production test selection of aerobic tank outlet for chemical dosing, on-site verification of the phosphorus removal effect of PAC. The test Test, when the PAC dosage was 60mg/L, dosage of beta coefficient is 4.22, t 本公司對(duì)所供的口腔牙科污水處理設(shè)備采用全程服務(wù)的售后方式。保修期自設(shè)備安裝、調(diào)試完畢并雙方驗(yàn)收合格之日算起,一年內(nèi)設(shè)備配件如因非人為損壞,本廠負(fù)責(zé)免費(fèi)以舊換新并負(fù)責(zé)安裝;一年后本廠收取低于市場(chǎng)成本價(jià)的維修費(fèi)用,終身提供技術(shù)服務(wù);建立安裝、日常維修、維護(hù)服務(wù)檔案,詳細(xì)記錄設(shè)備的使用、維修、維護(hù)情況。 1,提供設(shè)備的安裝技術(shù)服務(wù),并免費(fèi)培訓(xùn)操作人員 2, 提供整套設(shè)備使用、簡(jiǎn)易維修及維護(hù)的技術(shù)培訓(xùn)。 3, 定期現(xiàn)場(chǎng)回訪,解決設(shè)備運(yùn)行過程中遇到的具體問題,防患未然。 4, 我們將在管理上、技術(shù)上全面考慮設(shè)備售后的服務(wù),為系統(tǒng)少出問題、不出問題提供全面保障。 5, 保修期內(nèi):對(duì)設(shè)備出現(xiàn)的問題,首先通過解決,如通過解決不了,則我廠派人員到現(xiàn)場(chǎng)解決。響應(yīng)時(shí)間如下:(如需我廠派員到現(xiàn)場(chǎng)維修,我廠接到后會(huì)立即起程)設(shè)備故障24小時(shí)內(nèi)修復(fù)、配件故障6小時(shí)內(nèi)修復(fù)、附件故障3小時(shí)內(nèi)修復(fù)。維修響應(yīng)時(shí)間不包括路程時(shí)間。 6,故障等級(jí)分類如下:設(shè)備故障:因故障造成整個(gè)系統(tǒng)故障;配件故障:因故障嚴(yán)重影響系統(tǒng)運(yùn)行;附件故障:因故障影響系統(tǒng)的效率,但系統(tǒng)仍然可以運(yùn)行。