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Performance study of calcium hypochlorite on wastewater treatment system from biomass gasification water scrubber

Performance study of calcium hypochlorite on wastewater treatment system from biomass gasification water scrubber / Lee Shu Xian
Prestasi kalsium hipoklorit [Ca(OCI)2] telah dikaji untuk menentukan kesesuaian untuk merawat air kumbahan daripada air scrubber pengegasan biomass. Kajian ini juga menentukan kesesuaian teknikal rawatan fizik-kimia untuk menyingkiran logam berat seperti zink daripada janaan air sisa Biomass Pengegasan Logi (BPL) yang mengandungitar. Tumpuan khusus diberikan untuk memastikan keadaan operasi yang optimum termasuk pH, dos yang diperlukan, kepekatan logam awal dan prestasi rawatan kepada pemendakan kimia melalui Test Jar .Ujian eksperimen dapat membuktikan bahawa kalsium hipoklorit adalah yang paling kerap dikaji dan digunakan secara meluas untuk rawatan yang digunakan untuk disinfektan, pengklorinan, oksida dan penyingkiran air sisa logam tercemar. 1g / L kalsium hipoklorit telah mampu membasmi zink dengan kepekatan awal 31.5 mg / L sepenuhnya. Keputusan adalah setanding dengan masa tahanan yang berbeza dan suhu. Mengenai kandungan klorin yang ada, rawatan aircenderung untuk menjadi stabil bagisehari penyimpanan apabila disimpan pada 6°C atau pada 20°C kerana haba menyumbang kepada ketidakstabilan terhadap air rawatan itu. Kalsium hipoklorit amat beralkali dan menunjukkan peningkatan pH apabila kepekatan kalsium hipoklorit semakin bertambah. Adalah penting untuk ambil perhatian bahawa kos rawatan keseluruhan air sisa berbeza-beza, bergantung kepada proses yang digunakan, kualiti air sisa dan keadaan tempatan. Secara umum, kesesuaian teknikal, kesederhanaan loji dan keberkesanan kos adalah faktor utama dalam memilih rawatan yang paling sesuai untuk efluen bukan organik.875007265 _______________________________________________________________________________________________________ Performance of calcium hypochlorite [Ca(OCI)2] was investigated to determine the suitability to treat the wastewater from biomass gasifier water scrubber. This research also reviews the technical applicability of physic-chemical treatment for the removal of heavy metal(zinc) from Biomass Gasification Plant (BGP)-generated tar-containing wastewater. A particular focus is given to coagulant precipitation through Jar Test to determine the optimal operating conditions which include pH, dose required, initial metal concentration and treatment performance. It is evident from the experiment that calcium hypochlorite are the most frequently studied and widely applied for the treatment used for disinfectant, chlorination, oxidant and removal of metal-contaminated wastewater. 1g/L of calcium hypochlorite has achieved a complete removal of zinc with an initial concentration of 31.5 mg/L. The results are comparable to that of different retention times and temperature. Regarding the available chlorine content, the treated solutions tend to be stable to 1 days of storage when kept at 6°C or at 20°C as the heat contribute to the instability of the solutions. Calcium hypochlorite solutions are extremely alkaline and showed an increase in pH when the concentration of calcium hypochlorite increase. It is important to note that overall treatment cost of wastewater varies, depending on the process employed, quality of wastewater and the local conditions. In general, the technical applicability, plant simplicity and cost effectiveness are the key factors in selecting the most suitable treatment for inorganic effluent.
Contributor(s):
Lee Shu Xian - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003107145
Accession Number : 875007265
Subject Keywords:
calcium hypochlorite; biomass gasifier water scrubber; physic-chemical treatment
First presented to the public:
6/1/2017
Original Publication Date:
4/24/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 69
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-24 14:43:12.553
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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Performance study of calcium hypochlorite on wastewater treatment system from biomass gasification water scrubber1 2018-04-24 14:43:12.553