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地點(diǎn): 西安市
開展時(shí)間: 2025-03-13
舉辦單位: 中國機(jī)械工業(yè)聯(lián)合會、中國通信工業(yè)協(xié)會
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地點(diǎn): 武漢市
開展時(shí)間: 2025-03-14
舉辦單位: 北京鼎成創(chuàng)贏國際展覽有限公司
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地點(diǎn): 成都市
開展時(shí)間: 2025-03-15
舉辦單位: 四川省農(nóng)機(jī)服務(wù)協(xié)會、四川省農(nóng)業(yè)機(jī)械學(xué)會、四川省農(nóng)業(yè)工程學(xué)會、四川省5G產(chǎn)業(yè)聯(lián)盟智慧農(nóng)業(yè)專委會、中國天
讓農(nóng)村改廁更標(biāo)準(zhǔn)更規(guī)范 ——專家就《農(nóng)村三格式戶廁建設(shè)技術(shù)規(guī)范》等3項(xiàng)國家標(biāo)準(zhǔn)編制情況答記者問
2020-05-12
08:58:16
來源:農(nóng)業(yè)農(nóng)村部新聞辦公室 閱讀量:15993
評論
【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 今年4月底,市場監(jiān)管總局(標(biāo)準(zhǔn)委)批準(zhǔn)發(fā)布《農(nóng)村三格式戶廁建設(shè)技術(shù)規(guī)范》《農(nóng)村三格式戶廁運(yùn)行維護(hù)規(guī)范》《農(nóng)村集中下水道收集戶廁建設(shè)技術(shù)規(guī)范》3項(xiàng)推薦性國家標(biāo)準(zhǔn)。3項(xiàng)標(biāo)準(zhǔn)由農(nóng)業(yè)農(nóng)村部環(huán)境保護(hù)科研監(jiān)測所、農(nóng)業(yè)農(nóng)村部規(guī)劃設(shè)計(jì)研究院分別牽頭起草。
近日,農(nóng)業(yè)農(nóng)村部環(huán)境保護(hù)科研監(jiān)測所鄉(xiāng)村環(huán)境建設(shè)創(chuàng)新團(tuán)隊(duì)*鄭向群研究員、農(nóng)業(yè)農(nóng)村部規(guī)劃設(shè)計(jì)研究院農(nóng)村能源與環(huán)保研究所所長沈玉君高級工程師、中國疾病預(yù)防控制中心農(nóng)村改水技術(shù)指導(dǎo)中心副主任張榮研究員圍繞3項(xiàng)標(biāo)準(zhǔn)編制情況進(jìn)行解讀,回答記者提問。
問:請介紹一下農(nóng)村改廁3項(xiàng)國家標(biāo)準(zhǔn)的編制背景。
鄭向群:廁所雖小,卻是重大民生工程。2018年以來,農(nóng)業(yè)農(nóng)村部、國家衛(wèi)生健康委會同有關(guān)部門積極行動(dòng),有力推進(jìn)實(shí)施,取得積極成效,農(nóng)村衛(wèi)生廁所普及率超過60%。這兩年,我們到基層調(diào)研以及過年過節(jié)回家,也切身感受到了農(nóng)村改廁給老百姓生活帶來的新變化。與此同時(shí),大家也認(rèn)識到當(dāng)前農(nóng)村改廁仍然存在一些問題,特別是在2019年國務(wù)院農(nóng)村人居環(huán)境整治大檢查發(fā)現(xiàn),一些地方技術(shù)模式選擇不科學(xué)、產(chǎn)品和施工質(zhì)量不高、運(yùn)行維護(hù)機(jī)制不完善等。此次3項(xiàng)國家標(biāo)準(zhǔn)的發(fā)布實(shí)施,完善了農(nóng)村戶廁標(biāo)準(zhǔn)體系,有助于上述問題的解決。
為做好標(biāo)準(zhǔn)編制工作,編制組提前籌劃,堅(jiān)持邊研究邊調(diào)研邊起草,廣泛征求了業(yè)內(nèi)專家、地方部門、改廁企業(yè)、相關(guān)部委以及社會各界意見建議,進(jìn)行了反復(fù)研究論證。在市場監(jiān)管總局(標(biāo)準(zhǔn)委)的大力支持和精心指導(dǎo)下,于4月底正式發(fā)布。應(yīng)該說,這是農(nóng)村改廁領(lǐng)域標(biāo)準(zhǔn)化建設(shè)取得的標(biāo)志性成果。
問:對農(nóng)村三格式戶廁建設(shè)有哪些規(guī)定?
鄭向群:農(nóng)村三格式戶廁是目前各地農(nóng)村改廁工作中采用較多的一種模式,農(nóng)民接受程度也比較高,但看似簡單,實(shí)則有一定技術(shù)含量,是個(gè)系統(tǒng)工程,一個(gè)環(huán)節(jié)出了問題都有可能導(dǎo)致農(nóng)民群眾不愿用。為此,《農(nóng)村三格式戶廁建設(shè)技術(shù)規(guī)范》聚焦農(nóng)村三格式戶廁建設(shè)的全過程,對設(shè)計(jì)、施工、驗(yàn)收等內(nèi)容進(jìn)行了規(guī)定。
一是明確了農(nóng)村三格式戶廁的選址、廁屋、衛(wèi)生潔具和三格化糞池的設(shè)計(jì)要求,重點(diǎn)對適合農(nóng)村地區(qū)使用的三格化糞池結(jié)構(gòu)、選型和質(zhì)量要求進(jìn)行了規(guī)定,如提出了三格化糞池的有效容積選擇方法,明確了材料要求、物理性能和密封性能指標(biāo),從源頭保障農(nóng)村三格式戶廁建設(shè)的設(shè)計(jì)水平和產(chǎn)品質(zhì)量。
二是提出了農(nóng)村三格式戶廁安裝與施工要求。從材料與設(shè)備進(jìn)場檢驗(yàn)、廁屋施工、衛(wèi)生潔具安裝,以及三格化糞池安裝與施工環(huán)節(jié)提出了技術(shù)要求,對容易出現(xiàn)質(zhì)量問題的環(huán)節(jié)提出了專業(yè)施工技術(shù)要求,確保施工過程和質(zhì)量管理的標(biāo)準(zhǔn)化。
三是提出了工程質(zhì)量驗(yàn)收要求,明確了驗(yàn)收主體和流程,給出了驗(yàn)收要點(diǎn),為各地制定驗(yàn)收方案提供了參考。
問:農(nóng)村改廁需要與農(nóng)村生活污水處理有效銜接,標(biāo)準(zhǔn)對此有哪些規(guī)定?
鄭向群:2019年7月,中央農(nóng)辦、農(nóng)業(yè)農(nóng)村部等7部委聯(lián)合印發(fā)了《關(guān)于切實(shí)提高農(nóng)村改廁工作質(zhì)量的通知》,提出要優(yōu)先解決好廁所糞污收集和利用去向問題,與農(nóng)村生活污水治理有機(jī)銜接。從各地反映來看,農(nóng)村戶廁改造與污水處理如何有效銜接,農(nóng)村帶有下水道的戶廁如何建設(shè),目前還缺少科學(xué)規(guī)范。如有的地方采用城市集中排水管網(wǎng)建設(shè)要求,導(dǎo)致投資高;有的地方套用單戶改廁技術(shù),導(dǎo)致過度改造;有的地方糞污無害化處理效果參差不齊,容易造成區(qū)域性面源污染和可利用肥料資源流失。
本次發(fā)布的《農(nóng)村集中下水道收集戶廁建設(shè)技術(shù)規(guī)范》就是基于銜接農(nóng)村改廁和污水治理問題而編制的??傮w來說,廁所污水與農(nóng)村生活雜排水宜分開收集。在已建和擬建生活污水收集管網(wǎng)和集中處理設(shè)施的地區(qū),農(nóng)村改廁應(yīng)和收集管網(wǎng)銜接,廁所污水應(yīng)盡量進(jìn)入收集管網(wǎng),和生活污水一并處理,不能“兩張皮”,避免重復(fù)建設(shè)。具體做法是:農(nóng)戶改廁時(shí),可以修建兩格或一格化糞池,然后接入收集管網(wǎng);已完成水沖式衛(wèi)生廁所改造的農(nóng)戶,可直接把三格化糞池等接入收集管網(wǎng);入戶管道坡度較大的農(nóng)戶,可不用建設(shè)化糞池等預(yù)處理設(shè)備,直接把便器排出的廁所污水接入管網(wǎng)。同時(shí),為避免廁所污水進(jìn)入收集管網(wǎng)導(dǎo)致的管道堵塞、后期處理負(fù)擔(dān)過重等問題,本標(biāo)準(zhǔn)從技術(shù)和操作的角度為各種接入方式提出了避免措施和手段。
問:標(biāo)準(zhǔn)中使用了化糞池有效容積的概念,有什么考慮?
張榮:實(shí)際上,有效容積并不是新概念。我們查閱了相關(guān)資料,早在本世紀(jì)初,《農(nóng)村環(huán)境衛(wèi)生工作指南》和《中國農(nóng)村衛(wèi)生廁所技術(shù)指南》中,在闡述三格化糞池廁所設(shè)計(jì)原理和相關(guān)參數(shù)時(shí)就使用了有效容積的表述。因?yàn)閷τ谌袷交S池來說,只有過糞管下沿的部分才是糞污的實(shí)際貯存空間,過糞管以上的部分是空腔,不儲存糞污。對此,《農(nóng)村戶廁衛(wèi)生規(guī)范》提出三格化糞池容積≥1.5m3,所指的也是有效儲存空間。《塑料化糞池》就明確使用了有效容積。2019年,國家衛(wèi)生健康委辦公廳、農(nóng)業(yè)農(nóng)村部辦公廳印發(fā)的《農(nóng)村戶廁建設(shè)技術(shù)要求(試行)》中,在三格式戶廁結(jié)構(gòu)中對有效容積進(jìn)行了再次強(qiáng)調(diào)。
從目前了解的情況來看,有的地方對此理解不一致。如果以化糞池總?cè)莘e替代有效容積,將導(dǎo)致糞污無害化處理空間過小,無法在規(guī)定的停留時(shí)間內(nèi)達(dá)到糞污無害化處理效果。因此,此次發(fā)布的標(biāo)準(zhǔn)明確使用了有效容積表述,有助于確保糞污達(dá)到無害化處理效果。同時(shí),標(biāo)準(zhǔn)還結(jié)合家庭人口數(shù)量,給出了化糞池有效容積的參考值:對于3人以下的,有效容積參考值≥1.5m3;4-6人的,有效容積參考值≥2m3;7-9人的,有效容積參考值≥2.5m3,便于各地選擇。
問:為什么《農(nóng)村三格式戶廁建設(shè)技術(shù)規(guī)范》和《農(nóng)村集中下水道收集戶廁建設(shè)技術(shù)規(guī)范》標(biāo)準(zhǔn)中化糞池結(jié)構(gòu)不一樣?
張榮:《農(nóng)村三格式戶廁建設(shè)技術(shù)規(guī)范》中的化糞池是三格化糞池,《農(nóng)村集中下水道收集戶廁建設(shè)技術(shù)規(guī)范》中的化糞池是兩格或一格化糞池,甚至可以不用化糞池。這是根據(jù)糞污去向不同而提出的不同技術(shù)措施。
對農(nóng)村三格式戶廁建設(shè)而言,后端需要配上糞污清掏機(jī)制或就地就近資源化利用條件,換句話說,三格化糞池將為后期清掏做準(zhǔn)備,除了處理糞污、達(dá)到無害化要求外,還具有糞污儲存功能。
對農(nóng)村集中下水道收集戶廁建設(shè)而言,后端直接連入污水處理管網(wǎng),沒有必要進(jìn)行就地?zé)o害化處理和長期存儲,因此化糞池只需兩格或一格,讓廁所污水停留24小時(shí),初步沉淀液化后可以進(jìn)入收集管網(wǎng),將糞污無害化及發(fā)酵功能交給后期的集中處理設(shè)施來完成,這樣既提高了污水集中處理設(shè)施利用效率,又減少了廁所建設(shè)投入。
問:在農(nóng)村廁所日常管護(hù)上,標(biāo)準(zhǔn)提出了哪些要求?
沈玉君:廁所建得好,更要管得好。《農(nóng)村三格式戶廁運(yùn)行維護(hù)規(guī)范》重點(diǎn)就農(nóng)村三格式戶廁的日常使用、糞污管理、維護(hù)、應(yīng)急處置以及管護(hù)等內(nèi)容進(jìn)行了規(guī)定。主要集中在以下幾個(gè)方面。
一是明確了農(nóng)村三格式戶廁的廁屋、便器、清洗設(shè)施和化糞池等部件的日常使用和維護(hù)維修要求,并對檢查時(shí)間和頻次進(jìn)行了量化。如廁屋內(nèi)外宜每日清掃;化糞池第三池糞污應(yīng)每月檢查一次;化糞池第一、二池的糞皮、糞渣應(yīng)每半年檢查一次;應(yīng)每年至少檢查一次化糞池、檢測一次糞污無害化處理效果。
二是歸納了一套糞污管理全過程的要求,覆蓋化糞池清掏、糞污運(yùn)輸、糞污處理處置等環(huán)節(jié),做到全過程有標(biāo)可依。如第一、二、三池糞污不應(yīng)互混清掏,不應(yīng)取用第一、二池的糞污施肥。
三是提出了農(nóng)村三格式廁所管護(hù)服務(wù)的引導(dǎo)性要求,包括鼓勵(lì)管護(hù)市場化、服務(wù)社會化、糞污清理處理專業(yè)化和裝備機(jī)械化;鼓勵(lì)建立智能管護(hù)系統(tǒng),如車載定位、視頻監(jiān)控、以及糞污液位傳感器、糞污無害化處理效果等監(jiān)測系統(tǒng)。
問:如果化糞池漏了或者糞污溢出來了應(yīng)該如何處理,對此標(biāo)準(zhǔn)提出了哪些措施?
沈玉君:建設(shè)三格式戶廁的主要目的是通過三格式化糞池,減少、去除或殺滅糞污中的病原體,控制蚊蠅滋生、防止惡臭擴(kuò)散去除和殺滅寄生蟲卵等病原體。如果一旦化糞池發(fā)生滲漏或糞污外溢將達(dá)不到無害化處理效果,對環(huán)境造成污染。因此,《農(nóng)村三格式戶廁運(yùn)行維護(hù)規(guī)范》明確提出,如化糞池出現(xiàn)滲漏或糞污外溢問題時(shí),應(yīng)立即停止使用,及時(shí)清掏糞污、維修或更換化糞池,同時(shí)向清掏或外溢的糞污中加入生石灰或消毒劑等進(jìn)行消毒及無害化處理。
此外,對于糞口傳播疾病發(fā)生的高風(fēng)險(xiǎn)地區(qū),標(biāo)準(zhǔn)提出廁屋內(nèi)應(yīng)加大通風(fēng)換氣,加強(qiáng)消毒;化糞池周邊環(huán)境應(yīng)在專業(yè)人員指導(dǎo)下進(jìn)行消毒;清掏作業(yè)人員應(yīng)加強(qiáng)個(gè)人防護(hù),及時(shí)洗手消毒;清掏及轉(zhuǎn)運(yùn)過程,應(yīng)保證糞污不暴露,嚴(yán)格密閉糞污收運(yùn)設(shè)施;應(yīng)對清掏后可能污染的場所、設(shè)施設(shè)備進(jìn)行消毒,應(yīng)符合《消毒技術(shù)規(guī)范》的相關(guān)要求。
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